Cyperus ohwii Kük.

Cyperus ohwii and Nelumbo nucifera in north moat of Fukuoka Castle 4
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そらみみ Wikimedia Commons
Description: 日本語: 福岡城上之橋付近のツクシオオガヤツリとハス. Date: 27 July 2017, 15:17:13. Source: Own work. Author: そらみみ. Camera location33° 35′ 18.84″ N, 130° 23′ 20.21″ E View all coordinates using: OpenStreetMap 33.588567; 130.388947.
Cyperus ohwii and Nelumbo nucifera in north moat of Fukuoka Castle 3
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そらみみ Wikimedia Commons
Description: 日本語: 福岡城上之橋付近のツクシオオガヤツリとハス. Date: 16 June 2017, 15:54:03. Source: Own work. Author: そらみみ. Camera location33° 35′ 18.93″ N, 130° 23′ 20.15″ E View all coordinates using: OpenStreetMap 33.588592; 130.388931.
Cyperus ohwii and Nelumbo nucifera in north moat of Fukuoka Castle 5
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そらみみ Wikimedia Commons
Description: 日本語: 福岡城上之橋付近のツクシオオガヤツリとハス. Date: 23 July 2018, 15:06:00. Source: Own work. Author: そらみみ. Camera location33° 35′ 18.92″ N, 130° 23′ 20.18″ E View all coordinates using: OpenStreetMap 33.588589; 130.388939.
Cyperus ohwii and Nelumbo nucifera in north moat of Fukuoka Castle
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そらみみ (Soramimi) Wikimedia Commons
Description: 日本語: 福岡城上之橋付近のツクシオオガヤツリとハス. Date: 1 August 2016, 18:58:13. Source: Own work. Author: そらみみ (Soramimi). Camera location33° 35′ 18.74″ N, 130° 23′ 20.04″ E View all coordinates using: OpenStreetMap 33.588539; 130.388900.
Cyperus ohwii and Nelumbo nucifera in north moat of Fukuoka Castle 2
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そらみみ Wikimedia Commons
Description: 日本語: 福岡城上之橋付近のツクシオオガヤツリとハス. Date: 16 June 2017, 15:53:48. Source: Own work. Author: そらみみ. Camera location33° 35′ 18.85″ N, 130° 23′ 20.43″ E View all coordinates using: OpenStreetMap 33.588569; 130.389008.
Cyperus ohwii and Nelumbo nucifera in north moat of Fukuoka Castle 6
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そらみみ Wikimedia Commons
Description: 日本語: 福岡城上之橋付近のツクシオオガヤツリとハス. Date: 16 July 2020, 14:59:08. Source: Own work. Author: そらみみ. Camera location33° 35′ 18.89″ N, 130° 23′ 20.28″ E View all coordinates using: OpenStreetMap 33.588581; 130.388967.
Nelumbo nucifera in north moat of Fukuoka Castle 25
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そらみみ Wikimedia Commons
Description: 日本語: 福岡城上之橋付近のハス. Date: 16 July 2020, 14:59:22. Source: Own work. Author: そらみみ. Camera location33° 35′ 18.92″ N, 130° 23′ 20.48″ E View all coordinates using: OpenStreetMap 33.588589; 130.389022.